发明名称 |
Object detection device with variable sensitivity electric field measurement circuit |
摘要 |
Three or more electrodes are arranged on either a window frame or window glass of an automobile. An electric field measurement unit measures the capacitance between various combinations of the electrodes to detect whether an object is located between the window frame and window glass. A control circuit varies the sensitivity of the electric field measurement unit by switching amongst the electrodes used for capacitance measurement based on the movement and position of the window glass. |
申请公布号 |
US8720279(B2) |
申请公布日期 |
2014.05.13 |
申请号 |
US201113104991 |
申请日期 |
2011.05.11 |
申请人 |
OGAWA SHUNICHI;FREESCALE SEMICONDUCTOR, INC. |
发明人 |
OGAWA SHUNICHI |
分类号 |
G01L1/14;G01R27/26 |
主分类号 |
G01L1/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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